WO2024009841A1 - Dispositif d'acquisition d'information de sujet et système ophtalmique - Google Patents

Dispositif d'acquisition d'information de sujet et système ophtalmique Download PDF

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Publication number
WO2024009841A1
WO2024009841A1 PCT/JP2023/023744 JP2023023744W WO2024009841A1 WO 2024009841 A1 WO2024009841 A1 WO 2024009841A1 JP 2023023744 W JP2023023744 W JP 2023023744W WO 2024009841 A1 WO2024009841 A1 WO 2024009841A1
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subject
eye
position information
information acquisition
ophthalmological
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PCT/JP2023/023744
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English (en)
Japanese (ja)
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涼介 柴
賢士朗 藤生
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株式会社ニデック
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions

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  • the present disclosure relates to a subject information acquisition device that acquires information on a subject undergoing an examination with an ophthalmologic device, and an ophthalmology system including the subject information acquisition device.
  • the examination of the eye to be examined using many ophthalmological devices needs to be performed with the relative position between the ophthalmological device and the eye to be examined adjusted to an appropriate position.
  • an operator e.g., a doctor or a laboratory technician
  • the height of the examination axis when the examination is performed by the first eye examination unit is Based on the information and the difference in eye level between the first eye test unit and the second eye test unit, the height of the test axis during the test by the second eye test unit is adjusted.
  • the relative position of any ophthalmological device to the subject's eye needs to be adjusted manually or automatically at least once. Therefore, a technique is desired that allows the relative position of the eye to be examined and the ophthalmological apparatus to be adjusted to an appropriate position in advance even for a subject who is performing an examination using an ophthalmological apparatus for the first time.
  • a typical objective of the present disclosure is to provide a patient information acquisition device and an ophthalmology system that can further improve the efficiency of examining the eye of a patient using an ophthalmology device.
  • a patient information acquisition device provided by a typical embodiment of the present disclosure is a patient information acquisition device used in an ophthalmology system that examines the eye of a patient, and the ophthalmology system
  • the patient information acquisition device includes one or more ophthalmological devices that examine the subject's eye in a state where the relative position with respect to the eye examination is adjusted to an appropriate position
  • the subject information acquisition device includes a body temperature detection unit that detects the subject's body temperature.
  • a photographing unit that photographs a face image that is an image including the face of the subject, and a control unit, and the control unit detects the body temperature of the same subject by the body temperature detection unit; a detection/photographing step of simultaneously performing photographing of a face image by the photographing section; and acquiring eye position information, which is information regarding the position of the eyes of the subject, based on the face image photographed by the photographing section.
  • An ophthalmologic system provided by a typical embodiment of the present disclosure is an ophthalmologic system that inspects an eye of a subject, and inspects the eye with its relative position relative to the eye to be examined adjusted to an appropriate position.
  • the patient information acquisition device includes one or more ophthalmological devices, a patient information acquisition device that acquires information on the patient, and a control unit, and the patient information acquisition device is configured to detect body temperature of the patient.
  • the control unit includes a detection unit and a photographing unit that photographs a face image that is an image including the face of the subject, and the control unit is configured to detect the body temperature by the body temperature detection unit and to detect the body temperature of the same subject.
  • position information acquisition step, and at least one of the ophthalmological apparatuses is configured to adjust the relative position of the subject's eye and the ophthalmic apparatus to an appropriate position based on the eye position information of the subject. In the adjusted state, the eye to be examined is examined.
  • the efficiency of examining the subject's eye by the ophthalmology device is further improved.
  • the subject information acquisition device exemplified in the present disclosure is used in an ophthalmology system that examines the eye of a subject.
  • An ophthalmic system includes one or more ophthalmic devices.
  • the ophthalmological apparatus examines the eye to be examined in a state where the relative position with respect to the eye to be examined is adjusted to an appropriate position.
  • the subject information acquisition device includes a body temperature detection section, an imaging section, and a control section.
  • the body temperature detection section detects the body temperature of the subject.
  • the photographing unit photographs a face image that is an image including the subject's face.
  • the control unit executes a detection/imaging step, an eye position information acquisition step, and an eye position information output step.
  • the control section causes the body temperature detection section to detect body temperature and the photographing section to photograph a face image of the same subject.
  • the control unit acquires eye position information, which is information regarding the position of the subject's eyes, based on the face image photographed by the photographing unit.
  • the control unit outputs eye position information as information for adjusting the relative position of the eye of the subject and the ophthalmological apparatus to an appropriate position in at least one of the ophthalmological apparatuses.
  • both the body temperature detection and the photographing of a facial image of the subject are performed, and the eye position of the subject is determined based on the photographed facial image. Information is obtained.
  • the eye position information is output as information for adjusting the relative position with respect to the eye to be examined in at least one of the ophthalmological apparatuses.
  • Ophthalmological equipment includes various devices for performing examinations of the eye to be examined (for example, photographing the eye to be examined, measuring ocular characteristics of the eye to be examined, and observing the eye to be examined (including observation for surgery or treatment, etc.).
  • an ophthalmological device for photographing the eye to be examined at least one of an OCT device, a laser scanning ophthalmoscope (SLO), a fundus camera, a goniometric device, a corneal endothelial cell imaging device (CEM), etc.
  • SLO laser scanning ophthalmoscope
  • CEM corneal endothelial cell imaging device
  • the ophthalmological device for measuring the ocular characteristics of the eye to be examined at least one of an eye refractive power measuring device, a corneal shape measuring device, an axial length measuring device, an intraocular pressure measuring device, etc. can be adopted.
  • a photocoagulation device, a YAG laser surgical device, a slit lamp, etc., for performing surgery or treatment on the tissue of the eye to be examined while observing the eye to be examined, may be used as the ophthalmological device.
  • the eye position information may include information regarding the height from the subject's chin to the eyes.
  • an ophthalmological device that adjusts the position based on the position of the jaw of the patient's eye for example, an ophthalmological device that examines the patient's eye with the patient's chin resting on a jaw rest
  • the ophthalmological device and the patient's eye The relative position of is adjusted appropriately based on the eye position information.
  • the eye position information may include information regarding the interpupillary distance of the subject.
  • the relative positions between each of the subject's left and right eyes and the ophthalmological apparatus are appropriately adjusted based on the eye position information.
  • the eye position information may include information regarding the height from the subject's eyes to the forehead. In this case, the positions of the ophthalmological apparatus and the eye to be examined are appropriately adjusted based on the height from the eye to the forehead of the examinee.
  • a specific method for adjusting the relative position of the eye to be examined and the ophthalmological apparatus to an appropriate position based on the eye position information can be selected as appropriate.
  • at least one of the ophthalmological apparatuses may include a drive unit that adjusts the relative position of the subject's eye and the ophthalmic apparatus by moving at least one of the subject's face and the ophthalmic apparatus.
  • the control unit of the ophthalmologic apparatus adjusts the relative position of the eye to be examined and the ophthalmologic apparatus to an appropriate position by controlling the operation of the drive unit based on the eye position information output by the subject information acquisition device. You can.
  • At least one of the devices provided in the ophthalmology system collects the eye position information of the patient to be examined relative to the eye to be examined and the ophthalmology device. It may also be output as reference information for having the user adjust the position.
  • the relative position of the eye to be examined and the ophthalmological apparatus may be manually adjusted by a user who has grasped the eye position information.
  • the eye position information may be output by being displayed on the display unit, or may be output by being printed on paper, for example.
  • the eye position information may be output by being recorded on a magnetic card, RFID, or the like.
  • the ophthalmological apparatus itself is often equipped with a function to automatically adjust the relative position of the apparatus and the subject's eye (so-called auto-alignment function).
  • auto-alignment function a function to automatically adjust the relative position of the apparatus and the subject's eye.
  • the ophthalmological device itself adjusts the relative position more accurately using the auto alignment function, making it more efficient than before.
  • the relative positions are adjusted appropriately. Therefore, the accuracy of the eye position information acquired by the subject information acquisition device may not be so high.
  • the control unit of the patient information acquisition device may be built into the patient information acquisition device, or may be installed in a device connected to the patient information acquisition device (for example, a personal computer, a mobile terminal, an ophthalmological device, etc.). ) may be built in.
  • the control unit built into the subject information acquisition device and the control unit built into another device work together to function as the control unit of the subject information acquisition device.
  • the subject information acquisition device is placed at a location different from the installation location of the ophthalmological device (for example, at the entrance or reception desk of the facility).
  • the photographing unit may include a depth information acquisition means that can acquire depth information to the photographic subject (which may also be expressed as information on the distance to the photographic subject).
  • the control unit may acquire eye position information of the subject based on the photographed face image and depth information to the face of the subject to be photographed. In order to obtain more accurate eye position information, it is desirable to refer to depth information in addition to the face image.
  • both the face image and the depth information can be appropriately acquired, so that the eye position information can be acquired more appropriately.
  • depth information may be acquired using a known method employed in a three-dimensional camera (eg, stereo method, ToF method, structured illumination method, etc.).
  • the stereo method is a method for acquiring depth information based on images captured by multiple cameras.
  • the ToF method is a method for acquiring depth information based on the time it takes for light emitted from a light source to return to the imaging unit.
  • the structured illumination method is a method in which illumination light (such as an index) is irradiated onto an object and depth information is acquired based on the state of the irradiated light.
  • the depth information may be acquired by a distance measuring sensor that measures the distance to the subject's face, which is the object to be photographed.
  • the photographing unit may photograph a comparison object (for example, a measuring tape with scales, etc.) whose size, length, width, etc. are known, together with the subject's face.
  • the control unit may acquire depth information based on the size of at least a portion of the comparison object in the face image.
  • the subject information acquisition device may further include a face fixing unit that fixes the subject's face at a predetermined position relative to the imaging unit.
  • the control unit may acquire eye position information of the subject based on the relative positional relationship between the imaging unit and the subject's face fixed by the face fixing unit.
  • the position of the face relative to the imaging unit for example, the distance between the imaging unit and the face
  • eye position information can be acquired more accurately than when the position of the face at the time of photographing changes with respect to the photographing unit.
  • the position of the face relative to the photographing unit is known, it is also possible to obtain approximate eye position information based on the photographed two-dimensional image.
  • the control unit may further execute a subject information storage step of storing the eye position information in the storage device in association with the subject from whom the eye position information has been acquired.
  • the subject to be examined is identified, and the relative position of the eye to be examined and the ophthalmic device is determined based on eye position information stored in the storage device in association with the identified patient. may be adjusted to an appropriate position.
  • the relative position between the eye to be examined and the ophthalmic apparatus is adjusted appropriately based on the eye position information of the subjects being examined. Ru.
  • the one or more ophthalmological devices included in the ophthalmological system may include an ophthalmological device capable of acquiring eye position information of a subject during an examination.
  • the control unit may further execute an examination position information acquisition step and a replacement step.
  • the examination position information acquisition step the control unit acquires examination eye position information that is the subject's eye position information that the ophthalmological apparatus actually acquires during the examination.
  • the replacing step the control unit replaces, in the ophthalmological apparatus included in the ophthalmological system, the eye position information to be referred to in the next and subsequent examinations of the subject from the eye position information stored in the subject information storage step at the time of the examination. Replace with eye position information.
  • the eye position information at the time of the examination acquired by the ophthalmological device is often more accurate than the eye position information acquired using the photographing unit of the subject information acquisition device because it is the eye position information at the time of the examination. . Therefore, by replacing the eye position information that is referenced during the next and subsequent examinations with the eye position information at the time of the examination from the eye position information acquired using the imaging unit of the examiner information acquisition device, the eye position information that will be referenced during the next and subsequent examinations ( During subsequent examinations (including subsequent examinations conducted on the same day as the first examination), the relative position between the eye to be examined and the ophthalmological apparatus is adjusted more appropriately.
  • the specific method for the ophthalmological apparatus to acquire the eye position information at the time of examination can also be selected as appropriate.
  • the ophthalmological apparatus may acquire eye position information at the time of the test based on an image of the subject's face taken during the test. Further, the ophthalmological apparatus may acquire eye position information at the time of examination based on control position information of the ophthalmological apparatus whose relative position with respect to the subject's eye has been adjusted to an appropriate position.
  • the control unit may further execute an identifier output step of outputting an identifier indicating the eye position information acquired in the eye position information acquisition step.
  • the relative position of the eye to be examined and the ophthalmologic apparatus may be adjusted to an appropriate position based on eye position information indicated by the identifier output in the identifier output step. In this case, by reading the identifier, the relative position of the eye to be examined and the ophthalmological apparatus is appropriately adjusted.
  • the control unit may output the identifier by causing a printing device capable of printing the identifier to print the identifier indicating the eye position information. Further, the control unit may output the identifier by transmitting an image of the identifier indicating the eye position information to a mobile terminal (for example, a smartphone) used by the subject.
  • a mobile terminal for example, a smartphone
  • the control unit may further execute a warning step in which a warning process is performed when the body temperature of the subject detected in the detection/imaging step exceeds a reference value.
  • the subject information acquisition device can perform a warning process when a subject whose body temperature exceeds the reference value is discovered while acquiring eye position information of the subject. Therefore, it becomes easier for business to proceed more smoothly.
  • control unit may warn that the subject's body temperature exceeds a reference value using at least one of a sound, a light source, and a display on a screen. Further, the control unit may output a signal, e-mail, or the like indicating that the subject's body temperature exceeds a reference value to a device or the like used by an employee of the facility.
  • Various processes such as the detection/imaging step and the eye position information acquisition step described above may be executed by the control unit of the subject information acquisition device among the control units of the plurality of devices included in the ophthalmology system. It may be executed by a control unit other than the subject information acquisition device. Furthermore, the control units of multiple devices may cooperate to execute various processes (steps).
  • the control unit of the ophthalmology system may further execute a subject identification step of identifying a subject to be examined by the ophthalmology apparatus.
  • At least one of the ophthalmological devices performs an examination of the eye to be examined in a state in which the relative position of the eye to be examined and the ophthalmological device is adjusted to an appropriate position based on the eye position information of the patient identified in the patient identification step. may be executed.
  • the relative position between the eye to be examined and the ophthalmological device is determined appropriately based on the eye position information of the specified subject to be examined. is adjusted to
  • the control unit of the ophthalmology system identifies the patient to be examined by comparing the facial image of the patient to be examined with the facial image photographed in the detection/photography step. You can.
  • the face image of the subject photographed by the subject information acquisition device is used not only to obtain eye position information of the subject, but also to identify the subject to be examined. Therefore, by employing the subject information acquisition device, the overall work becomes more efficient and easier to proceed smoothly.
  • control unit of the ophthalmology system may identify the subject to be examined by acquiring at least one of the subject's name, ID, medical record number, and the like.
  • information on the subject to be examined may be acquired using an identifier or the like, or may be input into the ophthalmology system by the user.
  • FIG. 1 is a block diagram showing a schematic configuration of an ophthalmologic system 1.
  • FIG. FIG. 2 is a side view of the subject information acquisition device 10 in a state of acquiring information about a subject. 2 is a diagram showing an example of a face image 2 taken by the subject information acquisition device 10.
  • FIG. FIG. 2 is a side view of the ophthalmological apparatus 20 in a state where an examination of a subject's eye E is being performed. It is an example of a flowchart of a patient information acquisition process executed by the patient information acquisition device 10 (ophthalmology system 1). It is an example of the flowchart of the test
  • the ophthalmology system 1 of this embodiment includes a subject information acquisition device 10 and one or more ophthalmology devices 20.
  • the subject information acquisition device 10 is connected to the ophthalmological device 20 via at least one of wired communication, wireless communication, and a network.
  • the subject information acquisition device 10 acquires information on subjects who have visited the facility.
  • the subject information acquisition device 10 of the present embodiment detects the body temperature of each subject and captures a facial image, and also detects the eyes of the subject based on the captured facial image. Obtain eye position information, which is information related to position.
  • the patient information acquisition device 10 is preferably installed at a location different from the location where the ophthalmologic device 20 is installed (for example, at the entrance or reception desk of a facility).
  • the subject information acquisition device 10 of this embodiment includes a control unit 11 , an operation section 14 , a display section 15 , a body temperature detection section 16 , an imaging section 17 , a speaker 18 , and an identifier output section 19 .
  • the subject information acquisition device 10 of this embodiment includes a face fixing section 9 (see FIG. 2) that fixes the subject's face at a predetermined position with respect to the imaging section 17.
  • the face fixing section 9 can also be omitted.
  • the subject information acquisition device 10 of this embodiment is used while being installed on an installation surface (floor surface).
  • the subject information acquisition device 10 may be used while being held by the user.
  • the control unit 11 includes a CPU 12 that is a controller that controls control, and a storage device 13 that can store programs, data, and the like.
  • the CPU 12 built into the subject information acquisition device 10 functions as a control unit that controls the subject information acquisition device 10.
  • the CPU 12 also functions as a control unit that controls at least a portion of various controls in the ophthalmologic system 1 .
  • a control unit built in a device for example, a personal computer, a mobile terminal, or an ophthalmologic apparatus 20 ) connected to the subject information acquisition apparatus 10 controls the subject information acquisition apparatus 10 and the ophthalmology system 1 . It may function as at least one of the control units. Further, the CPU 12 built in the patient information acquisition device 10 and the CPU 12 built in another device work together to function as a control unit for at least one of the patient information acquisition device 10 and the ophthalmology system 1. You may.
  • the operation unit 14 receives various operation instructions from the user.
  • a touch panel installed on the display surface of the display unit 15 is used as the operation unit 14.
  • at least one of a button, a mouse, a keyboard, a remote controller, etc. may be used as the operation unit 14.
  • the display unit 15 displays various images. As an example, on the display unit 15 of this embodiment, an image (moving image) photographed by the photographing unit 17 is displayed in real time, and an appropriate image of the face of the examinee is displayed to obtain examinee information. An indicator indicating the position (for example, a frame indicating an appropriate facial outline position, etc.) is displayed.
  • the subject information acquisition device 10 performs the process of detecting the body temperature of the subject and photographing and saving the face image when the position of the subject's face is at the appropriate position indicated by the index. Execute.
  • the body temperature detection unit 16 detects the body temperature of the subject.
  • the specific configuration of the body temperature detection section 16 can be selected as appropriate. For example, infrared rays emitted from a detection target (in this embodiment, the subject's face) are focused on a detection element, and the temperature of the detection target (the subject's body temperature) is determined based on the change in temperature detected by the detection element.
  • a radiation thermometer or the like that detects the body temperature without contact may be used as the body temperature detection section 16. Further, the body temperature detection section 16 and the photographing section 17 may be used together.
  • a thermal camera or the like that photographs the detection target while detecting the two-dimensional distribution of infrared rays emitted from the detection target may be employed as the device that serves both the body temperature detection section 16 and the photographing section 17. Further, the body temperature detection unit 16 may detect the body temperature of the subject by contacting the subject.
  • the photographing unit 17 photographs a face image that is an image including the subject's face.
  • a three-dimensional camera 3D camera
  • 3D camera is capable of acquiring not only two-dimensional image information of a subject to be photographed (in this embodiment, the subject's face) but also depth information up to the subject. ) is used as the photographing section 17.
  • the depth information is also referred to, so that the eye position information is acquired more accurately. Note that it is possible to use either an active type camera or a passive type camera as the three-dimensional camera.
  • the active method is a method in which depth information to the object to be photographed is obtained based on the time it takes for radio waves or the like emitted towards the object to be photographed to be reflected back by the object to be photographed.
  • Active type cameras include, for example, ToF cameras.
  • the passive method is a method that acquires depth information without irradiating energy such as radio waves toward the object to be photographed. Examples of passive cameras include stereo cameras and light field cameras. Although details will be described later, it is also possible to acquire depth information from a reference position (for example, the position of an imaging unit, etc.) to an object to be photographed using a method different from the method using a three-dimensional camera.
  • the accuracy of the eye position information acquired based on the facial image is improved. Furthermore, depending on the configuration of the ophthalmologic apparatus 20, there are cases where the eye position information does not require high accuracy. In these cases, a normal two-dimensional camera may be used as the photographing unit 17 instead of a three-dimensional camera.
  • the arrangement of the display section 15 and camera of the photographing section 17 of this embodiment will be explained in detail.
  • the camera, the display unit 15, and the camera are arranged in order along the vertical direction.
  • the two cameras with a large vertical separation, it becomes easier to appropriately capture the shape of the jaw, and the height from the jaw to the eye can be more accurately detected.
  • the second form four cameras are arranged to form the corners of a rectangle, and the display section 15 is displayed at the center of the four cameras. In this case, it becomes easier to detect eye position information more accurately.
  • the speaker 18 generates various sounds. For example, when the subject information acquisition device 10 of the present embodiment has completed detecting the subject's body temperature and photographing a face image, the speaker 18 generates a completion sound indicating that body temperature detection and photographing have been completed. let Further, the subject information acquisition device 10 can also cause the speaker 18 to generate a warning sound when the subject's body temperature detected by the body temperature detection unit 16 exceeds a reference value.
  • the identifier output unit 19 outputs an identifier (for example, QR code: registered trademark, etc.) indicating eye position information acquired based on the face image.
  • the identifier output unit 19 of this embodiment outputs an identifier by printing an identifier indicating eye position information on paper.
  • the identifier output unit 19 may output the identifier by transmitting an image of the identifier indicating eye position information to a mobile terminal used by the subject, the ophthalmological apparatus 20, or the like.
  • the ophthalmological apparatus 20 examines the eye E of the subject. Specifically, the ophthalmological apparatus 20 performs at least one of the following tests, such as photographing the eye to be examined, measuring ocular characteristics of the eye to be examined, and observing the eye to be examined (including observation for surgery or treatment). .
  • the ophthalmological apparatus 20 performs at least one of an OCT device, a laser scanning ophthalmoscope (SLO), a fundus camera, a goniometric imaging device, a corneal endothelial cell imaging device (CEM), etc. is employed as the ophthalmological device 20 that photographs the eye to be examined. can.
  • SLO laser scanning ophthalmoscope
  • CEM corneal endothelial cell imaging device
  • the ophthalmological device 20 that measures the ocular characteristics of the eye to be examined, at least one of an eye refractive power measuring device, a corneal shape measuring device, an axial length measuring device, an intraocular pressure measuring device, etc. can be adopted. Further, a photocoagulation device, a YAG laser surgical device, a slit lamp, or the like, which performs surgery or treatment on tissues of the eye to be examined while observing the eye to be examined, may be used as the ophthalmologic device 20.
  • the ophthalmological apparatus 20 of this embodiment includes a control unit 21, an operation section 24, a display section 25, a drive section 26, an imaging section 27, and an inspection unit 28. Further, an identifier reading section 29 may be connected to at least one of the ophthalmological apparatuses 20. Note that depending on the type of the ophthalmologic apparatus 20, at least some of the components (for example, the display section 25, the photographing section 27, etc.) may be omitted.
  • the control unit 21 includes a CPU 22 which is a controller in charge of control, and a storage device 23 capable of storing programs, data, and the like.
  • the CPU 22 controls the ophthalmologic apparatus 20 . Further, the CPU 22 may function as a control unit that controls the ophthalmologic system 1 alone or in cooperation with other control units.
  • the operation unit 24 receives various operation instructions from the user. For example, at least any of a touch panel, a button, a mouse, a keyboard, a joystick, a remote controller, etc. can be employed as the operation unit 24.
  • the display section 25 displays various images.
  • the drive unit 26 adjusts the relative position of the subject's eye E and the ophthalmological apparatus 20. For example, the drive unit 26 moves at least one of the position of the face support unit 31 (see FIG. 4) that supports the face of the subject and the position of the inspection unit 28 of the ophthalmological apparatus 20, thereby moving the subject's eye E. and the ophthalmological device 20. Details of the drive section 26 will be described later with reference to FIG. 4.
  • the imaging unit 27 is arranged so that the positional relationship with respect to the inspection unit 28 is constant.
  • the photographing unit 27 photographs the subject's face.
  • the CPU 22 is capable of acquiring eye position information (eye position information at the time of examination), which is information regarding the position of the subject's eyes, based on the photographed facial image.
  • the inspection unit 28 includes a configuration for executing an inspection of the eye E to be examined.
  • the inspection unit 28 includes an OCT optical system, an SLO optical system, a fundus camera optical system, a goniometric imaging optical system, a corneal endothelial cell imaging optical system, an axial length measurement optical system, an eye refractive power measurement optical system, and a corneal shape measurement optical system. It may include at least one of an optical system, an intraocular pressure measuring optical system, an observation optical system for use during surgery, an observation optical system for use during treatment, a slit lamp optical system, and the like.
  • the identifier reading unit 29 reads the identifier output by the identifier output unit 19 and acquires the eye position information indicated by the identifier.
  • the identifier reading unit 29 may be connected to the ophthalmological apparatus 20 or may be built in the ophthalmological apparatus 20.
  • the subject information acquisition device 10 of this embodiment includes a face fixing section 9.
  • the face fixing unit 9 fixes the subject's face at a predetermined position with respect to the photographing unit 17 of the subject information acquisition device 10.
  • the subject information acquisition device 10 detects the body temperature of the subject by the body temperature detection unit 16 and captures the face image of the subject by the imaging unit 17 while the face of the subject is fixed by the face fixing unit 9. 2 (see FIG. 3).
  • the face fixing part 9, the background, etc. that are reflected in the image are omitted.
  • the face fixing section 9 the position of the face relative to the photographing section 17 (for example, the distance DT between the photographing section 17 and the face, etc.) is known.
  • the CPU 12 of the subject information acquisition device 10 determines the position of the subject's eyes E (right eye ER and left eye EL) based on the photographed face image 2.
  • Obtain eye position information which is information related to the eye position.
  • the CPU 12 may acquire eye position information by performing image processing on the face image 2 and detecting the positions of the eyes ER, EL, chin, etc. of the face appearing in the face image 2.
  • the CPU 12 provides information regarding the height EH from the subject's chin to the eyes ER and EL (for example, a specific numerical value of the height EH, or a comparison of the height EH with some standard).
  • the relative height between the subject's eyes ER, EL and the ophthalmologic apparatus 20 is appropriately adjusted based on the eye position information.
  • the CPU 12 acquires information regarding the interpupillary distance PD between the right eye ER and left eye EL of the subject (for example, a specific numerical value or relative value of PD) as eye position information.
  • the CPU 12 may acquire information regarding the height EH from the subject's eyes ER and EL to the forehead as eye position information.
  • the position of the face relative to the imaging section 17 at the time of photographing is known.
  • the CPU 12 determines the subject's face based on the relative positional relationship between the photographing section 17 and the subject's face fixed by the face fixing section 9 (for example, the distance DT between the photographing section 17 and the face). Obtain eye position information. Therefore, compared to the case where the position of the face at the time of photographing changes with respect to the photographing unit 17, eye position information can be acquired more accurately.
  • the photographing section 17 may be a two-dimensional camera instead of a three-dimensional camera.
  • the CPU 12 acquires the eye position information of the subject based on the face image 2 and the depth information up to the face of the subject to be photographed. Therefore, eye position information can be acquired more accurately than when depth information is not used.
  • the method of acquiring depth information from the reference position (for example, the photographing unit 17, etc.) to the photographing target can be selected as appropriate.
  • depth information may be acquired by a distance sensor that measures the distance to the face of the subject to be photographed.
  • the subject information acquisition device 10 may further include an index projection unit that projects an index for acquiring depth information onto the face of the subject.
  • the CPU 12 may acquire depth information based on the size of the index appearing in the photographed face image 2.
  • the photographing unit 17 may photograph a comparison object (for example, a measuring tape with scales, etc.) whose size, length, width, etc. are known, together with the subject's face. .
  • the CPU 12 may acquire depth information based on the size of at least a portion of the comparison object appearing in the face image 2. Note that if depth information is obtained together with the face image 2, the face fixing unit 9 may be omitted. In this embodiment, as described above, depth information is acquired by using a known three-dimensional camera.
  • FIG. 4 is a side view of the ophthalmological apparatus 20 in a state where an examination of the subject's eye E is being performed.
  • the ophthalmological apparatus 20 includes an examination unit 28.
  • the inspection unit 28 includes a configuration for executing an inspection of the eye E to be examined.
  • the ophthalmologic apparatus 20 includes a base 30 , a face support unit 31 , a housing 32 , an operation section 24 , a display section 25 , a drive section 26 , and an imaging section 27 .
  • the base 30 supports the entire ophthalmological device 20.
  • the face support unit 31 is fixed to the base 30 and fixes (supports) the subject's face at a predetermined position relative to the photographing section 27 and the examination unit 28 of the ophthalmological apparatus 20 during examination.
  • the position of the face supported by the face support unit 31 is a known position with respect to the imaging section 27 and the inspection unit 28.
  • the housing 32 houses the inspection unit 28 and the like, and fixes the display section 25 and the like in a predetermined position. Further, as described above, various operation instructions by the user are input to the operation unit 24.
  • the display section 25 displays various images.
  • the drive unit 26 moves at least one of the position of the face support unit 31 and the position of the examination unit 28 (in this embodiment, the housing 32 that houses the examination unit 28), so that the eye E to be examined and the ophthalmological apparatus are moved. Adjust the relative position between 20.
  • the drive unit 26 of this embodiment moves the housing 32 in the left-right direction (X direction), the up-down direction (Y direction), and the front-back direction (Z direction, in other words, in the working distance direction) with respect to the base 30. can be moved to
  • the drive unit 26 includes an actuator for moving the housing 32 in each predetermined movable direction.
  • the drive unit 26 is driven based on a control signal from the CPU 22 (see FIG. 1). Note that the drive unit 26 may adjust the relative position in the vertical direction between the eye E and the ophthalmological apparatus 20 by moving the position (for example, the vertical position) of the face support unit 31.
  • the imaging unit 27 is arranged so that the positional relationship with respect to the inspection unit 28 is constant.
  • the photographing unit 27 photographs the subject's face supported by the face support unit 31.
  • the CPU 22 can acquire eye position information, which is information regarding the position of the eyes on the subject's face, based on the photographed face image.
  • the photographing unit 17 of the subject information acquisition apparatus 10 is used. It is often more accurate than eye position information obtained by Moreover, the ophthalmological apparatus 20 can also acquire eye position information at the time of examination based on control position information in a state where the relative position with respect to the subject's eye has been adjusted to an appropriate position.
  • Subject information acquisition process Referring to FIG. 5, the subject information acquisition process executed by the subject information acquisition device 10 (or the ophthalmology system 1) will be described.
  • the CPU 12 of the subject information acquisition device 10 executes the subject information acquisition process.
  • the CPU 12 executes the subject information acquisition process illustrated in FIG. 5 in accordance with the subject information processing program stored in the storage device 13.
  • a control unit of a device different from the subject information acquisition apparatus 10 may execute the subject information acquisition process. Further, a plurality of control units may cooperate to execute the subject information acquisition process.
  • the patient information acquisition device 10 be placed at the entrance or reception of the facility where the ophthalmology system 1 is installed.
  • the subject visits the facility, the subject moves to the front of the subject information acquisition device 10, and while checking the moving image captured by the camera unit 17 and displayed on the display unit 15, the subject moves his or her face into the camera unit. 17 to an appropriate position within the photographing range.
  • the subject information acquisition device 10 includes the face fixing unit 9, the subject fixes his or her face to the face fixing unit 9, so that the position of the subject's face can be adjusted for photographing and body temperature detection. This will be the appropriate position for this purpose.
  • the CPU 12 determines whether the subject's face has moved to an appropriate position for body temperature detection and facial image photographing (S11). If the face has not moved to the appropriate position (S11: NO), the process of S11 is repeated and a standby state is entered.
  • the CPU 12 determines that the subject's face has moved to the appropriate position (S11: YES)
  • the body temperature detection unit 16 performs the process of detecting the subject's body temperature
  • the photographing unit 17 processes the subject's face image 2.
  • the photographing process automatically starts (S12). Note that the timing of detecting the subject's body temperature and the timing of photographing the subject's face image 2 do not need to be at the same time.
  • the CPU 12 determines whether or not the subject's body temperature detected in S12 exceeds the reference value (S14). If the body temperature does not exceed the reference value (S14: NO), the process directly proceeds to S16. If the body temperature exceeds the reference value (S14: YES), the CPU 12 executes a warning process to warn that the subject's body temperature is high (S15). As a result, the possibility that a subject who has contracted an infectious disease such as the new coronavirus or influenza virus will spread the infectious disease within the facility is appropriately reduced.
  • the warning process may be performed by at least one of sound, lighting of a light source, display on a screen, etc., or may be performed by outputting a signal or e-mail to a device within the facility.
  • the CPU 12 acquires the subject's eye position information based on the subject's face image 2 photographed in S12 (S16).
  • the specific method for acquiring eye position information based on the face image 2 is as described above.
  • the CPU 12 obtains more accurate eye position information by referring to at least one of the depth information at the time of photographing and the relative positional relationship between the photographing unit 17 and the face together with the face image 2. do.
  • the CPU 12 stores the eye position information acquired in S16 in the storage device 13 in association with the subject who acquired the information (S17).
  • a specific method for storing the eye position information in association with the subject can be selected as appropriate.
  • the CPU 12 stores eye position information in association with the face image 2 of the subject photographed in S12.
  • the CPU 12 may store the eye position information in association with, for example, the subject's name or ID.
  • the CPU 12 outputs an identifier indicating the eye position information acquired in S16 (S18). After that, the process returns to S11. As described above, in this embodiment, the CPU 12 outputs the identifier by printing the identifier indicating the eye position information on paper using the identifier output unit 19. Note that it is also possible to omit at least one of the processes in S17 and S18.
  • the inspection process executed by the ophthalmologic apparatus 20 (or the ophthalmologic system 1) will be described.
  • the inspection process based on the already acquired eye position information of the subject to be inspected, so that the relative position between the eye to be inspected and the ophthalmological apparatus 20 (specifically, the inspection unit 28) becomes an appropriate position.
  • the position of the ophthalmological apparatus 20 (specifically, the position of at least one of the examination unit 28 and the face support unit 31) is adjusted in advance.
  • the test unit 28 tests the eye to be examined.
  • the CPU 22 of the ophthalmologic apparatus 20 executes the inspection process.
  • the CPU 22 executes the inspection process illustrated in FIG.
  • the CPU 22 of the ophthalmological apparatus 20 and other devices may cooperate to execute the examination process. That is, at least part of the processing in the examination processing illustrated in FIG. 6 may be executed by a control unit other than the ophthalmologic apparatus 20.
  • the CPU 22 determines whether the identifier indicating eye position information has been read by the identifier reading unit 29 (see FIG. 1) (S21).
  • the CPU 22 reads the identifier based on the eye position information indicated by the read identifier.
  • the position of at least one of the examination unit 28 and the face support unit 31 is adjusted in advance so that the relative position of the eye to be examined and the examination unit 28 is an appropriate position (S22). After that, the process moves to S27.
  • the CPU 22 determines whether the subject to be examined has been identified (S24). As an example, in the present embodiment, when the CPU 22 acquires a facial image of a subject to be examined, the CPU 22 converts the acquired facial image into a facial image 2 (Fig. 3) to identify the subject to be tested. As described above, the subject's face image 2 photographed during body temperature detection is stored in the storage device 13 in association with the subject's eye position information. As described above, in this embodiment, the facial image 2 taken during body temperature detection is used not only to obtain eye position information of the subject, but also to identify the subject to be examined. It will be done. Therefore, by employing the subject information acquisition device 10, the entire business becomes more efficient and easier to proceed smoothly.
  • the face image acquired in S24 for comparison with the face image 2 photographed during body temperature detection may be photographed by any photographing unit.
  • the ophthalmological apparatus 20 includes the photographing section 27, a face image photographed by the photographing section 27 of the ophthalmological apparatus 20 may be used for verification. Further, a face image photographed by a photographing device different from the ophthalmological apparatus 20 may be used for verification.
  • the CPU 22 may identify the subject by acquiring at least one of the name, ID, medical record number, etc. of the subject to be examined.
  • the information on the subject to be examined may be acquired using an identifier or the like, or may be input by the user into the ophthalmology system 1 (for example, the ophthalmology apparatus 20, etc.).
  • the process returns to S21, and the processes of S21 and S24 are repeated.
  • the examinee to be examined is specified (S24: YES)
  • the CPU 22 identifies the eye to be examined and the examination unit based on the eye position information stored in the storage device 13 in association with the identified examinee.
  • the position of at least one of the inspection unit 28 and the face support unit 31 is adjusted in advance so that the relative position of the face support unit 28 becomes an appropriate position (S25). After that, the process moves to S27.
  • the relative position of the eye to be examined and the ophthalmic apparatus 20 is determined in advance based on the eye position information. It is also possible to make adjustments.
  • the facial image 2 for acquiring eye position information is taken during body temperature detection, which is essential in many medical facilities, a separate process is required to acquire eye position information. Not at all.
  • the CPU 22 controls the test unit so that the relative position between the eye to be examined and the test unit 28 is an appropriate position by controlling the operation of the drive unit 26 based on the eye position information.
  • the positions of at least one of the face support unit 28 and the face support unit 31 are automatically adjusted in advance.
  • the CPU 22 may output the eye position information of the subject to be examined as reference information for allowing the user to adjust the relative position of the eye to be examined and the testing unit 28.
  • the relative position of the eye to be examined and the testing unit 28 may be manually adjusted by a user who has grasped the reference information.
  • the reference information may be output by being displayed on the display unit 25 or the like, or may be output by being printed on paper.
  • the CPU 22 determines whether or not the ophthalmological apparatus 20 can acquire eye position information during the actual examination of the subject's eye (for example, whether the ophthalmological apparatus 20 is equipped with a photographing unit 27 or the like for acquiring eye position information during the examination). (S27). If the eye position information at the time of examination cannot be acquired (S27: NO), the process moves to S29. If the eye position information at the time of examination can be acquired (S27: YES), the CPU 22 acquires the eye position information at the time of examination based on the face image of the subject photographed by the photographing unit 27, and the acquired eye position information at the time of examination.
  • the eye position information at the time of examination that can be acquired by the ophthalmological device 20 is the eye position information at the time of the actual examination, so it is more accurate than the eye position information acquired based on the face image 2 taken during body temperature detection. There are many cases. Therefore, by finely adjusting the relative position based on the eye position information at the time of examination, the accuracy of the examination of the subject's eye by the ophthalmological apparatus 20 is further improved.
  • the eye position information at the time of examination may be acquired based on the control position information of the ophthalmological apparatus 20 whose relative position with respect to the eye to be examined has been adjusted to an appropriate position.
  • accurate eye position information at the time of examination when the relative position to the subject's eye is actually adjusted to the appropriate position is replaced as eye position information for the next time and thereafter.
  • the CPU 22 executes an examination of the eye to be examined with the relative position between the eye to be examined and the testing unit 28 adjusted to an appropriate position (S29).
  • the CPU 22 adds the eye position information to be referenced during the next and subsequent examinations of the subject to the face image 2 photographed at the time of body temperature detection.
  • the eye position information acquired based on this information is replaced with the eye position information at the time of examination acquired in S28 or S29 (S30).
  • the CPU 22 transmits the eye position information at the time of examination acquired in S28 or S29 to the subject information acquisition device 10.
  • the CPU 12 of the subject information acquisition device 10 replaces the eye position information regarding the subject to be examined with the eye position information at the time of examination received from the ophthalmological apparatus 20 .
  • the eye position information at the time of examination is often more accurate than the eye position information acquired by the subject information acquisition device 10. Therefore, by replacing the eye position information that will be referred to during subsequent examinations with the eye position information at the time of examination, the relative position between the eye to be examined and the examination unit 28 will be adjusted more appropriately during subsequent examinations. be done.
  • the techniques disclosed in the above embodiments are merely examples. Therefore, it is also possible to modify the techniques exemplified in the above embodiments. For example, it is also possible to execute only some of the techniques exemplified in the above embodiments. Further, at least a part of the process shown in FIG. 5 may be executed by a control unit different from the CPU 12 of the subject information acquisition device 10. Similarly, at least a portion of the processing shown in FIG. 6 may be executed by a control unit different from the CPU 22 of the ophthalmological apparatus 20. In S17 of FIG. 5, the eye position information may be stored in a storage device (for example, a storage device of a server, etc.) different from the storage device 13 of the subject information acquisition device 10.
  • a storage device for example, a storage device of a server, etc.
  • the CPU 12 of the subject information acquisition device 10 controls the ophthalmological apparatus 20 and the subject's eye when adjusting the relative position of the ophthalmological apparatus 20 and the subject's eye (that is, at the time of alignment). It is also possible to determine whether there is a high possibility that the face of the user will come into contact with the user, and output the determination result. As an example, the CPU 12 may obtain a determination result as to whether or not there is a high possibility that the ophthalmologic apparatus 20 will come into contact with the face by inputting the facial image into a mathematical model trained by a machine learning algorithm.
  • the mathematical model may be trained in advance so as to output a determination result as to whether the face has a shape that makes it easy to come into contact with the ophthalmological device 20.
  • the CPU 12 also generates information that correlates with the contact between the ophthalmological device 20 and the face based on the face image (for example, the distance between the pupils, the height (distance) from the eyes to the tip of the nose, the depth of the facial carvings, etc.). etc.) and determine whether there is a high possibility of contact based on the acquired information.
  • At least one of the devices in the ophthalmological system 1 adjusts the relative position between the ophthalmological device 20 and the eye to be examined manually rather than automatically. , may be recommended to examiners.
  • the process of detecting body temperature and photographing the face image 2 in S12 of FIG. 5 is an example of a "detection/photographing step.”
  • the process of acquiring eye position information in S16 of FIG. 5 is an example of an "eye position information acquisition step.”
  • the process of outputting eye position information in S17 and S18 in FIG. 5 is an example of an "eye position information output step.”
  • the process of storing the eye position information in association with the subject in S17 of FIG. 5 is an example of a "subject information storage step.”
  • the process of replacing the eye position information with the eye position information at the time of examination in S29 of FIG. 6 is an example of a "replacement step.”
  • the warning process executed in S15 of FIG. 5 is an example of a "warning step.”
  • the process of identifying the subject to be examined in S24 of FIG. 6 is an example of a "subject identifying step.”

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  • Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
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  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
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Abstract

Dans la présente invention, une unité de commande exécute une étape de détection/d'imagerie, une étape d'acquisition d'information de position de l'oeil et une étape de sortie d'information de position de l'oeil. Lors de l'étape de détection/d'imagerie, l'unité de commande effectue, sur le même sujet, la détection de la température corporelle au moyen d'une unité de détection de température corporelle, et la capture d'une image faciale au moyen d'une unité d'imagerie. Lors de l'étape d'acquisition d'information de position de l'oeil, l'unité de commande acquiert une information de position de l'oeil, qui est une information concernant la position de l'oeil du sujet, sur la base de l'image faciale capturée par l'unité d'imagerie. Lors de l'étape d'émission en sortie d'information de position de l'oeil, l'unité de commande émet une information de position de l'oeil en tant qu'information pour ajuster, dans au moins un dispositif ophtalmique, les positions relatives de l'oeil du sujet examiné et du dispositif ophtalmique à une position appropriée.
PCT/JP2023/023744 2022-07-05 2023-06-27 Dispositif d'acquisition d'information de sujet et système ophtalmique WO2024009841A1 (fr)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022068215A (ja) * 2016-05-09 2022-05-09 マジック リープ， インコーポレイテッド ユーザ健康分析のための拡張現実システムおよび方法
WO2022138102A1 (fr) * 2020-12-25 2022-06-30 株式会社ニデック Appareil ophtalmique et programme de commande pour appareil ophtalmique

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022068215A (ja) * 2016-05-09 2022-05-09 マジック リープ， インコーポレイテッド ユーザ健康分析のための拡張現実システムおよび方法
WO2022138102A1 (fr) * 2020-12-25 2022-06-30 株式会社ニデック Appareil ophtalmique et programme de commande pour appareil ophtalmique

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